Finding the Fourth Proportional to 6,529.76, 8,991.24 and 5,786.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,529.76 : 8,991.24 = 5,786.72 : x
2. Step 2: Convert to fraction form
   6,529.76/8,991.24 = 5,786.72/x
3. Step 3: Cross multiply
   6,529.76x = 8,991.24 × 5,786.72
4. Step 4: Simplify right side
   6,529.76x = 52,029,788.33
5. Step 5: Solve for x
   x = 52,029,788.33/6,529.76
6. Step 6: Final answer
   x = 7,968.10